This file is indexed.

/lib/udev/rules.d/90-alsa-restore.rules is in alsa-utils 1.1.0-0ubuntu5.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

1
2
3
4
5
6
7
8
ACTION=="add", SUBSYSTEM=="sound", KERNEL=="controlC*", KERNELS!="card*", TEST=="/usr/sbin", TEST=="/usr/share/alsa", GOTO="alsa_restore_go"
GOTO="alsa_restore_end"

LABEL="alsa_restore_go"
TEST!="/etc/alsa/state-daemon.conf", TEST=="/usr/sbin/alsactl", RUN+="/usr/sbin/alsactl -E HOME=/run/alsa restore $attr{device/number}"
TEST=="/etc/alsa/state-daemon.conf", TEST=="/usr/sbin/alsactl", RUN+="/usr/sbin/alsactl -E HOME=/run/alsa nrestore $attr{device/number}"

LABEL="alsa_restore_end"